Noteworthy Friday Option Activity: MSFT, AA, IRBT

Looking at options trading activity among components of the Russell 3000 index, there is noteworthy activity today in Microsoft Corporation (MSFT), where a total volume of 227,910 contracts has been traded thus far today, a contract volume which is representative of approximately 22.8 million underlying shares (given that every 1 contract represents 100 underlying shares). That number works out to 109% of MSFT's average daily trading volume over the past month, of 20.9 million shares..